Home / 1,339,224.86-2,009,369.57-428,547.63

Finding the Fourth Proportional to 1,339,224.86, 2,009,369.57 and 428,547.63

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Solution

The fourth proportional to 1,339,224.86, 2,009,369.57 and 428,547.63 is: 642,991.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,224.86 : 2,009,369.57 = 428,547.63 : x
  2. Step 2: Convert to fraction form
    1,339,224.86/2,009,369.57 = 428,547.63/x
  3. Step 3: Cross multiply
    1,339,224.86x = 2,009,369.57 × 428,547.63
  4. Step 4: Simplify right side
    1,339,224.86x = 861,110,564,874.88
  5. Step 5: Solve for x
    x = 861,110,564,874.88/1,339,224.86
  6. Step 6: Final answer
    x = 642,991.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.